Tom has 39 silver dollars. You can do this on your head. Jimmy has 32, and Tom 39.
        
             
        
        
        
Nonlinear because the first differences are all different
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
Given: 76,45,64,80,92
Required: Determine the standard deviation
We start by calculating the mean

Where x-> 76,45,64,80,92 and n = 5



Subtract Mean (71.4) from each of the given data

Determine the absolute value of the above result

Square Individual Result

Calculate the mean of the above result to give the variance


Hence, Variance = 255.298
Standard Deviation is calculated by 



 
        
             
        
        
        
Answer:
 Option (d) is correct.
Step-by-step explanation:
The initial amount Tommy has = $ 199
The actual amount that Tommy needs to purchase bike = 199 + 35 = $ 234
This is the price of the bike.
This condition can be true from option (d). 
From option (d)
119 < b + 35
Put b = 234 we get 
119 < 234 + 35
119 < 269
Thus the condition satisfied. so option (d) is correct.